Extrusion screw for double-screw extruder

Abstract

The utility model discloses an extrusion screw for a double-screw extruder, and belongs to the technical field of extrusion screws. The extrusion screw comprises an extrusion screw body and a mounting sleeve, a through groove is formed in one end of the mounting sleeve, and two clamping grooves are formed in the through groove; a spring is arranged at one end in the through groove, and one end of the spring is connected with a pressing plate. A connecting rod is arranged at one end of the extrusion screw and inserted into the through groove, limiting clamping blocks are arranged on the two sides of one end of the connecting rod respectively, and the two limiting clamping blocks are clamped into the two clamping grooves respectively. The extrusion screw is pushed to drive the connecting rod and the limiting clamping block to move and extrude the pressing plate and the spring, so that the spring and the pressing plate are shrunk, then the extrusion screw is rotated to drive the connecting rod and the limiting clamping block to rotate and release limiting, and therefore the device can be detached from the mounting sleeve, the problem that a large amount of time and energy need to be consumed is solved, and the production efficiency is improved. And a special tool is generally needed for knocking, heating or cooling and the like, so that the process is tedious and the efficiency is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to extrusion screw technical field, concretely is a kind of extrusion screw for double-screw extruder. BACKGROUND

[0002] Auxiliary machine of double-screw extruder unit mainly includes pay-off device, straightening device, preheating device, cooling device, traction device, meter counter, spark testing machine, take-up device.The auxiliary equipment selected by extruder unit for different purposes is not the same, and one of its core components is extrusion screw.Extrusion screw plays a key role in melting and transporting plastic to mold during extrusion process.

[0003] The screw of traditional double-screw extruder needs to consume a lot of time and energy when disassembling, usually needs to use special tool to knock, heat or cool down, not only process is complicated, and efficiency is low, therefore, a kind of extrusion screw for double-screw extruder is proposed to overcome the above problems. SUMMARY

[0004] The utility model aims at providing a kind of extrusion screw for double-screw extruder, by driving extrusion screw to drive connecting rod and limit block to move, extruding spring and pressing plate, so that spring and pressing plate shrink, then rotating extrusion screw to drive connecting rod and limit block to rotate, release limit, so it can be disassembled from mounting sleeve, solve the problem of consuming a lot of time and energy, usually need to use special tool to knock, heat or cool down, not only process is complicated, and efficiency is low.

[0005] The utility model is realized by the following technical schemes:

[0006] The utility model is a kind of extrusion screw for double-screw extruder, including extrusion screw and mounting sleeve, one end of mounting sleeve is provided with through slot, two clamping grooves are formed in the inside of through slot;One end of the inside of through slot is provided with spring, one end of spring is connected with pressing plate;One end of extrusion screw is provided with connecting rod, connecting rod is inserted in through slot, two limit blocks are respectively arranged on the one end of connecting rod, two limit blocks are respectively clamped in two clamping grooves.

[0007] Further, two L-shaped grooves are respectively arranged on the inner wall of through slot, and the horizontal groove of L-shaped groove is communicated with clamping groove.

[0008] Further, the other end of mounting sleeve is connected with driving member, the other end of mounting sleeve is provided with insertion slot, and the output end of driving member is installed in insertion slot.

[0009] Further, mounting hole is formed in limit block, and ball is movably fitted in the inside of mounting hole.

[0010] Further, connecting rod is cylindrical structure.

[0011] The utility model has the advantages of the following:

[0012] 1. The utility model discloses a push extrusion screw drives connecting rod and limit block to move, and the spring is extruded to the pressing plate, and the spring and the pressing plate contract, then rotate extrusion screw drives connecting rod and limit block to rotate, and the limit is released, so that can be disassembled from the mounting sleeve, solve the need to consume a large amount of time and energy, usually need to use special tool to knock, heat or cool operation, not only the process is complicated, and the problem of low efficiency.

[0013] 2. The utility model discloses a ball is set up on the limit block, can increase the silk smooth degree of rotation, avoid appearing difficult to rotate the situation appears when rotating.

[0014] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is extrusion screw and drive member structural diagram;

[0016] Figure 2 It is connecting rod and mounting sleeve connecting structure schematic view;

[0017] Figure 3 It is connecting rod structure schematic view;

[0018] Figure 4 It is mounting sleeve internal structure schematic view.

[0019] In the drawing: 1, extrusion screw;101, connecting rod;102, limit block;103, mounting hole;104, ball;2, drive member;3, mounting sleeve;301, slot;302, through slot;303, L-shaped slot;304, clamping groove;4, spring;5, pressing plate. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0021] Please refer to Figures 1-4The utility model provides a technical scheme: a kind of extrusion screw for double-screw extruder, including extrusion screw 1 and mounting sleeve 3, mounting sleeve 3 is cylindrical structure, one end of mounting sleeve 3 is equipped with through slot 302, two clamping grooves 304 are equipped in the inside of through slot 302;Spring 4 is equipped in the inside one end of through slot 302, one end of spring 4 is connected with pressing plate 5;One end of extrusion screw 1 is equipped with connecting rod 101, connecting rod 101 is cylindrical structure, connecting rod 101 is inserted in through slot 302, two sides of one end of connecting rod 101 are equipped with limit clamping block 102 respectively, limit clamping block 102 is rectangular mechanism two limit clamping blocks 102 are clamped in two clamping grooves 304 respectively.

[0022] By pushing extrusion screw 1 drive connecting rod 101 and limit clamping block 102 move, extrude pressing plate 5 and spring 4, so that spring 4 and pressing plate 5 shrink, then rotate extrusion screw 1 drive connecting rod 101 and limit clamping block 102 rotate, release limit, so as to be detached from mounting sleeve 3, solve the need to consume a lot of time and energy, usually need to use special tool to knock, heat or cool operation, not only process is complicated, and the problem of low efficiency.

[0023] Two L-shaped grooves 303 are equipped on the inner wall of through slot 302 respectively, and the horizontal groove of L-shaped groove 303 is communicated with clamping groove 304;The other end of mounting sleeve 3 is connected with driving element 2, and the other end of mounting sleeve 3 is provided with insertion slot 301, and the output end of driving element 2 is installed in insertion slot 301.

[0024] When installing extrusion screw 1, align connecting rod 101 with through slot 302, align limit clamping block 102 with L-shaped groove 303, then push connecting rod 101 and limit clamping block 102 to the inside, extrude pressing plate 5 and spring 4, then shrink, rotate extrusion screw 1 drive connecting rod 101 and limit clamping block 102 rotate, make limit clamping block 102 rotate in L-shaped groove 303, then pull extrusion screw 1 drive connecting rod 101 and limit clamping block 102 move, make limit clamping block 102 be clamped in clamping groove 304, then pressing plate 5 resets under the action of spring 4, to install extrusion screw 1 on mounting sleeve 3.

[0025] Limit clamping block 102 is equipped with mounting hole 103, and ball 104 is movably fitted in the inside of mounting hole 103.

[0026] By setting ball 104 on limit clamping block 102, the degree of silkiness of rotation can be increased when rotating, and the situation of difficult rotation can be avoided.

[0027] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. An extrusion screw for a twin-screw extruder, comprising an extrusion screw (1) and a mounting sleeve (3), characterized in that: One end of the mounting sleeve (3) is provided with a through groove (302), and two slots (304) are provided inside the through groove (302); A spring (4) is provided at one end of the inside of the through groove (302), and a pressure plate (5) is connected to one end of the spring (4); One end of the extrusion screw (1) is provided with a connecting rod (101), which is inserted into the through groove (302). Limiting blocks (102) are provided on both sides of one end of the connecting rod (101), and the two limiting blocks (102) are respectively locked in two slots (304).

2. The extrusion screw for a twin-screw extruder according to claim 1, characterized in that, The inner wall of the through groove (302) is provided with two L-shaped grooves (303), and the horizontal grooves of the L-shaped grooves (303) are connected to the slots (304).

3. The extrusion screw for a twin-screw extruder according to claim 1, characterized in that, The other end of the mounting sleeve (3) is connected to a drive unit (2), and the other end of the mounting sleeve (3) has a slot (301) and the output end of the drive unit (2) is installed in the slot (301).

4. The extrusion screw for a twin-screw extruder according to claim 1, characterized in that, The limiting block (102) has a mounting hole (103), and a ball bearing (104) is movably fitted inside the mounting hole (103).

5. An extrusion screw for a twin-screw extruder according to claim 1, characterized in that, The connecting rod (101) has a cylindrical structure.

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